#include<stdio.h>
int main()
{
	int n, j, i;
	scanf_s("%d", &n);
	for (j = 1; j <=  n ; j++)
	{
		for (i = 1; i <= 2 * n - 1; i++)
		{
			if ((j == i) || (i == 2 * n - j))
				printf("*");
			else
				printf(" ");
		}
		printf("\n");
	}
	return 0;
}